linux-kernel - [PATCH AUTOSEL 4.19 20/57] drm/nouveau/secboot/acr: fix memory leak

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Message-Id: <20181104135144.88324-20-sashal@kernel.org>
Date:   Sun,  4 Nov 2018 08:51:07 -0500
From:   Sasha Levin <sashal@...nel.org>
To:     stable@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     "Gustavo A. R. Silva" <gustavo@...eddedor.com>,
        Ben Skeggs <bskeggs@...hat.com>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH AUTOSEL 4.19 20/57] drm/nouveau/secboot/acr: fix memory leak

From: "Gustavo A. R. Silva" <gustavo@...eddedor.com>

[ Upstream commit 74a07c0a59fa372b069d879971ba4d9e341979cf ]

In case memory resources for *bl_desc* were allocated, release
them before return.

Addresses-Coverity-ID: 1472021 ("Resource leak")
Fixes: 0d466901552a ("drm/nouveau/secboot/acr: Remove VLA usage")
Signed-off-by: Gustavo A. R. Silva <gustavo@...eddedor.com>
Reviewed-by: John Hubbard <jhubbard@...dia.com>
Reviewed-by: Kees Cook <keescook@...omium.org>
Signed-off-by: Ben Skeggs <bskeggs@...hat.com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/gpu/drm/nouveau/nvkm/subdev/secboot/acr_r352.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/secboot/acr_r352.c b/drivers/gpu/drm/nouveau/nvkm/subdev/secboot/acr_r352.c
index d02e183717dc..5c14d6ac855d 100644
--- a/drivers/gpu/drm/nouveau/nvkm/subdev/secboot/acr_r352.c
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/secboot/acr_r352.c
@@ -801,6 +801,7 @@ acr_r352_load(struct nvkm_acr *_acr, struct nvkm_falcon *falcon,
 		bl = acr->hsbl_unload_blob;
 	} else {
 		nvkm_error(_acr->subdev, "invalid secure boot blob!\n");
+		kfree(bl_desc);
 		return -EINVAL;
 	}
 
-- 
2.17.1